i want to know which version of Bluetooth installed in Pc it may be usb dongle also.
like is BT Version 2.0 or 2.1.....
See the property BluetoothRadio.HciVersion (and LmpVersion).
Note on desktop Windows with the MSFT stack those properties are only supported on Vista and later (tested on Win7), and with 32feet.NET version 3.2 and later.
[notes] http://32feet.codeplex.com/workitem/30326 http://inthehand.com/library/32feet/html/P_InTheHand_Net_Bluetooth_BluetoothRadio_HciVersion.htm